'use strict'
const path = require('path')
const defaultSettings = require('./src/settings.js')
const UglifyJsPlugin = require('uglifyjs-webpack-plugin') //引入打包优化插件
function resolve(dir) {
  return path.join(__dirname, dir)
}

const name = defaultSettings.title || '福猫基础应用中心' // 标题

const port = process.env.port || process.env.npm_config_port || 80 // 端口

// vue.config.js 配置说明
//官方vue.config.js 参考文档 https://cli.vuejs.org/zh/config/#css-loaderoptions
// 这里只列一部分，具体配置参考文档
module.exports = {
  // 部署生产环境和开发环境下的URL。
  // 默认情况下，Vue CLI 会假设你的应用是被部署在一个域名的根路径上
  publicPath: process.env.NODE_ENV === "production" ? "/" : "/",
  // 在npm run build 或 yarn build 时 ，生成文件的目录名称（要和baseUrl的生产环境路径一致）（默认dist）
  outputDir: 'dist',
  // 用于放置生成的静态资源 (js、css、img、fonts) 的；（项目打包之后，静态资源会放在这个文件夹下）
  assetsDir: 'static',
  // 是否开启eslint保存检测，有效值：ture | false | 'error'
  lintOnSave: process.env.NODE_ENV === 'development',
  // 如果你不需要生产环境的 source map，可以将其设置为 false 以加速生产环境构建。
  productionSourceMap: false,
  // webpack-dev-server 相关配置
  devServer: {
    host: '0.0.0.0',
    port: port,
    open: true,
    proxy: {
      // http://192.168.100.153:8080
      // detail: https://cli.vuejs.org/config/#devserver-proxy
      [process.env.VUE_APP_BASE_API]: {
        // target: `https://sys.fkmalls.com/`,
        // target: `http://127.0.0.1:8080`,
        target: `https://sys-t.fkmalls.com/stage-api`,
        changeOrigin: true,
        pathRewrite: {
          ['^' + process.env.VUE_APP_BASE_API]: ''
        }
      }
    },
    disableHostCheck: true
  },
  configureWebpack: {
    name: name,
    resolve: {
      alias: {
        '@': resolve('src')
      }
    },
    externals: {
      'vue': 'Vue',
      'element-ui': 'ELEMENT',
      'vue-router': 'VueRouter',
      'vuex': 'Vuex',
      'axios': 'axios'
    },
    // 打包优化
    optimization: {
      minimizer: [
        new UglifyJsPlugin({
          uglifyOptions: {
            // 删除注释
            output: {
              comments: false
            },
            // 删除console debugger 删除警告
            compress: {
              drop_console: true, //console
              drop_debugger: false,
              pure_funcs: ['console.log'] //移除console
            }
          }
        })
      ]
    }
  },
  // 解决图标丢失
  css: {
    loaderOptions: {
      sass: {
        sassOptions: {
          outputStyle: 'expanded'
        }
      }
    }
  },
  chainWebpack(config) {
    config.plugins.delete('preload') // TODO: need test
    config.plugins.delete('prefetch') // TODO: need test

    // set svg-sprite-loader
    config.module
      .rule('svg')
      .exclude.add(resolve('src/assets/icons'))
      .end()
    config.module
      .rule('icons')
      .test(/\.svg$/)
      .include.add(resolve('src/assets/icons'))
      .end()
      .use('svg-sprite-loader')
      .loader('svg-sprite-loader')
      .options({
        symbolId: 'icon-[name]'
      })
      .end()

    config
      .when(process.env.NODE_ENV !== 'development',
        config => {
          config
            .plugin('ScriptExtHtmlWebpackPlugin')
            .after('html')
            .use('script-ext-html-webpack-plugin', [{
              // `runtime` must same as runtimeChunk name. default is `runtime`
              inline: /runtime\..*\.js$/
            }])
            .end()
          config
            .optimization.splitChunks({
              chunks: 'all',
              cacheGroups: {
                libs: {
                  name: 'chunk-libs',
                  test: /[\\/]node_modules[\\/]/,
                  priority: 10,
                  chunks: 'initial' // only package third parties that are initially dependent
                },
                // elementUI: {
                //   name: 'chunk-elementUI', // split elementUI into a single package
                //   priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
                //   test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
                // },
                commons: {
                  name: 'chunk-commons',
                  test: resolve('src/components'), // can customize your rules
                  minChunks: 3, //  minimum common number
                  priority: 5,
                  reuseExistingChunk: true
                }
              }
            })
          config.optimization.runtimeChunk('single'),
          {
            from: path.resolve(__dirname, './public/robots.txt'), //防爬虫文件
            to: './', //到根目录下
          }
          const CompressionPlugin = require('compression-webpack-plugin')
          const productionGzipExtensions = /\.(js|css|json|txt|html|ico|svg)(\?.*)?$/i
          config.resolve.alias.set('@', resolve('src'))
          config.plugin('compressionPlugin')
            .use(new CompressionPlugin({
              filename: '[path].gz[query]',
              algorithm: 'gzip',
              test: productionGzipExtensions,
              threshold: 10240,
              minRatio: 0.8,
              deleteOriginalAssets: false
            }))
        }
      )
  }
}
